Finally Got off my Ass

[CBFryman]

I got bored today, being on christmas break and all. So i went down to the closes S&S and got a new 9v battery for my dB meter.
I recalibrated it then got out a Test CD and a few rap CD's, went out inthe back yard and hooked up thoes 2 audiobahns. Here is the wrap sheet.

With Out Voltometer (Estimated Power Input 200w):
20Hz*1m: 83dB
30Hz*1m: 85dB
40Hz*1m: 86dB
50Hz*1m: 86dB

20-80Hz Sweep*1m:
Average-84dB
Peak-87dB

Lil John & East Side Boys "Get Low":
Peak 86dB

Outkast Remix "Whistle While you Trurk":
Peak 87dB

Lil John + Many Others Including Ludacris "Damn" Remix:
Peak 86.5dB

Note: This is in a Semi-infinite acoustical environment. You dont actually get the rated sensitivity of a woofer in most cases. especially when it is audiobahn...

With Voltometer (192w Maximum avalable input at given load, 1ohm)
20Hz*1m: 82.5dB
30Hz*1m: 84dB
40Hz*1m: 85.5dB
50Hz*1m: 86dB

20-80Hz Sweep*1m:
Average-83.5dB
Peak-86dB

Lil John & East Side Boys "Get Low":
Peak 86dB

Outkast Remix "Whistle While you Trurk":
Peak 86.5dB

Lil John + Many Others Including Ludacris "Damn" Remix:
Peak 87dB

Then hauled this 75lb acoustical POS inside into my room and ran the same testsin different locations here it goes (mid you this room is 12ft*13ft*8ft walls and 11ft peak. even with the space occupied by my bed, armuar (which it gets surprisingly loud inside that armuar) dresser, TV and other stereo equiptment it is far surpassed that of hte volum of a car. your could easily tack on at least 3dB at least in each of these tests for your average car.

@1m 192w Maximum Avalable input
20Hz: 88dB
30Hz: 92dB
40Hz: 93dB
50Hz: 93.5dB

20-80Hz Sweep:
Average-91dB
Peak-94dB

Lil John & East Side Boys "Get Low":
Peak 92dB

Outkast Remix "Whistle While you Trurk":
Peak 93dB

Lil John + Many Others Including Ludacris "Damn" Remix:
Peak 91dB

External Port Measurements (same 192w avalable input for the rest of this data)
20Hz: 110dB
30Hz: 113dB
40Hz: 115dB
50Hz: 115.5dB

20-80Hz Sweep:
Average-113.5dB
Peak-117dB

Lil John & East Side Boys "Get Low":
Peak 115dB

Outkast Remix "Whistle While you Trurk":
Peak 114.5dB

Lil John + Many Others Including Ludacris "Damn" Remix:
Peak 115dB



Corner Of The Room (greatest pressure increses and standing waves)
20Hz: 109dB
30Hz: 111dB
40Hz: 114dB
50Hz: 115dB

20-80Hz Sweep:
Average-111dB
Peak-114.5dB

Lil John & East Side Boys "Get Low":
Peak 115dB

Outkast Remix "Whistle While you Trurk":
Peak 113.5dB

Lil John + Many Others Including Ludacris "Damn" Remix:
Peak 114dB


Aprox. Center of Room
20Hz: 87dB
30Hz: 91.5dB
40Hz: 92dB
50Hz: 93dB

20-80Hz Sweep:
Average-90dB
Peak-92.5dB

Lil John & East Side Boys "Get Low":
Peak 92dB

Outkast Remix "Whistle While you Trurk":
Peak 93dB

Lil John + Many Others Including Ludacris "Damn" Remix:
Peak 92dB


I was going to test Punk Noise and Brown Noise but i cant stand either at high volumes. so...

Not to shabby for 2 weak audiobahns. id like to think it was mostly my expert enclosure building...lol. well it had to be beause i think most of you have seen some of the specs from when they where in 2 small sealed enclsoures and it was no where near this i do beleive. anyway contact me if you are interested in purchasing these woofers. at the moment it is jsut primed white. i am willing to fiberglass, finish painting w/e color you want, or carpet the enclosure for a nominal fee. Right now i am at 235 OBO as is. we can work out the extra cost if you would like a it glassed or painted etc..

If you want an idea of the enclosure here are its specs. Note: none of these are defanit. it was over 2 moths ago that i built this enclosure and i lost the spec sheet. im also too lazy to go back on the CAD design and recalculate volume and tuning.

16" W
24" D
36" H

3.2cuft i beleive

I think 54sqin port area

Tunes to 32Hz

Made of 3/4" MDF with MDF and White pine bracing

if you want an idea of what it looks like look in my signature. it is a 3.2cuft version of that design. so its almost exactly the same. in fact both enclosures where built at the same time on the same weekend. they even used parts from the same sheeets of MDF so you can say you have a part of my signature. lol.

Edit:
all of that typeing and i didnt tell what woofers they are. well FYI they are 2 AW1051T's. for thoes of you who dont know they are 10's with a poly molded cone and chrome basket. if you are interested in purchasing it and actually do purchase it i will send one of the manuals (and complemetary sticker that i never used and probably threw away, if i can find it) with the enclosure.
oh
and you pay shipping, lol. the UPS guy is going to be pissed off having to loat this into his truck.

[TheSilentChamber]

Clifnotes version:

Audiobahn is shitty, buy my shitty subs, and my box.

[sr20de4evr]

what exactly were you trying to accomplish?

coming up with a transfer function for your room?

[CBFryman]

Originally Posted by TheSilentChamber

Clifnotes version:

Audiobahn is shitty, buy my shitty subs, and my box.

lol, well in a sence, yes. I need to sell this to make room for the incoming tempest. that and i need some cash for the supplies to build the enclosure.

As for taking the in room responces. I dont know why i did that really. i was just curious to what type of gain the room offered.

[PaulD]

the room gain (for bass) will be nothing like what a typical car will be.